Injector.



E. D. LOANE, 1n.

LNIECTOR.

APPLICATION FILED MAR. 24, |908.

,WMWW www@ Da. 7, 1915.

www/33.55;

' K ws ATM/wey,

INJECTOR.

usarse.

Specification of Letters Patent.

'Application led March 24, 1908. Serial No. 423,065.

.Jr., a citizen of the United States, residing at Baltimore city, in the State of Maryland,

have invented a new and useful Injector, of

which the following is a specification.

My invention relates to improvements in injectors which are mechanically operated; and theobjects of my improvement are, first, to provide a means fon automatically introducing a substance into a chamber under pressure by means of the pressure therein; second, the regulation of said injector whereby the pressure must reach a predetermined point in a chamber before said injector will introduce the substance therein; and, third, means of regulating the discharge from said injector. I attain these objects by the mechanism illustrated in the accompanying drawings in which Figure 1 is a sectional view of my improvement showing the various parts eX- posed; Fig. 2, is a view taken through A B 'of F ig. 1; and Fig. 3, is a sectional View of a modified form of my invention.

vSimilar numerals refer to similar parts throughout the several views.

1 -1s the casing, one end of which is threaded at 2 in order to be screwed into a chambensuchas the head of a gasolene engine cylinder, the other end 3 of said casing being threaded to enable cap 4 to be screwed thereon. In cap In the center of adjusting screw 5 is passage 7 communicating with space 8 through opening 9 thus putting space 8 in direct com? munication with the exterior.

10 is a pistonworking in casing 1 and to which is attached piston rod 11 which rod works in space 8. Piston 10 is hollow and has valve 12 therein which valve 12 is held in position by -valve stem 13 and spring 14.

15 are open-ings communicating with the piston 10 and are controlled by movements.; of

' is attached a check valve and a -desire to introduce the j 4 is adjusting screw' Vwhich is locked in position by jam nut 6.

piston 10 andthe pressur'eof spring 19. 22 is a suction opening or supply, to which pipe leading into the fiuid to be injected. 1.

23 is .the suction chamber. The operation of my invention is as follows Threaded portion 2 of casing 'l is screwed into the chamber into which we substance., I will specifically describe'myinvention as applied to a gasolene or oil'engine but I do not wish to be understood as limiting myselftothis specific use. jected is drawn into chamber 23 and discharged through passage 17 into the cylinder when the pressure of combustion Vtakes place forcing piston 10 against spring 19, the discharge through passage 17 may be regulated by screw 24. If it is desired to introduce water into the gas engine cylinder 'after compression and ignition adjusting screw 5 is screwed against regulating block 21 until spring 19 is in such compression that piston not forced oif or away from shoulder 20. by the pressure of compression in the cylinder and not until ignition takes place when the pressure of combustion is available in space 18 for the purpose. bustion piston 10 is forced back allowing the fluid that is in space 23 to enter the piston through openings 15 and valve 12 and through that to be squirted out of passage 17 the pressure on the two ends of piston 10 being unequal one end being the area of 10 containing piston head 16 is' At the pressure of com Patented Dec.. 7, 1915.'

In Fig.'3 the Huid to be inv piston head 16 the other end being the same area' less the area of the end of the piston rod 11 which is exposed to the atmosphere j through passage 7 and opening 9. As the pressure in space 1,8 is reduced piston 10 resumes its normal position drawing liquid into space 23 through supply 22 and pipe in which an ordinary cheek valve 25is placed,

duce fuel such as gasolene, coal oil, petroleum or other burning Huid, the same may be introduced on the compression stroke of the engine before ignition by regula-ting spring 19 so that piston 10 will operate at any desired position in the compression stroke.

Having thus described my invention what I claim and desire to secure by Letters Patent isf l. An automatic injector comprising a casing with a supply adjacent to one end and a delivery adjacent to the other end, a liquid supply pipe communicating with the supply, a check valve therein, a plunger in the casing between the supply and delivery freeto reciprocate therein and having ends of differential areas, the end of larger area being exposed to the delivery pressure and the end of smaller area being exposed to the pressure in the casing between the plunger and the supply, and yielding means moving the plunger toward the delivery.

- j 2. An injector comprisinga casing with means of supply adjacent to one end thereof and a delivery adjacent to the other end, a liquid supply pipe communicating with the supply, al check valve therein, a plunger in the casing between the supply and delivery free to reciprocate therein and having ends of differential areas, the end of larger area beingexposed to the delivery pressure, the end of smaller area being exposed to the pressure in the casing between the plunger and the supply, and a portion thereof being exposed to a less pressure than the discharge pressure when the plunger in the casing is moving toward the supply end of the casing,

and yielding means moving the plunger toward the delivery.

l 3. An injector comprising a casing -with means of supply at one end thereof and a deliveryat the other end, a liquid supply pipe communicating with the supply, a

`check valve therein, a plunger in the casing between the supply and delivery free to reciprocate therein having ends of diHerential areas the end of larger area being exposed to the delivery pressure the end of smaller area being exposed to the pressure in the casing between the plunger and the supplyl and a portion thereof being exposed to a less pressure than the discharge pressure when the plunger 1n the casing is `moving toward the supply end of the casing, yielding means movingvthe plunger toward the delivery, and means Aof regulating the stroke of said plunger.

4. An injector comprising a casing with means of supply at one end thereof and a delivery at the other end, a liquid supply pipe communicating with the supply, a check valve therein, a plunger in the casing between the supplyfand delivery free to reciprocate therein and having ends of diferential areas the end of larger area being exposed to the delivery pressure the end of smaller area being exposed to the pressure in the casing between the plunger and the supply and a portion thereof being exposed to a less pressure than the discharge pressure when the plunger in the casing is moving toward the supply end of the casing, means of regulating the stroke of said plunger, means of maintaining the plunger against the delivery pressure until a predetermined point of said pressure is reached and means of regulating said predetermined point of said pressure.

5. An automatic injector comprising a casing with a supply adjacent to one end and a delivery adjacent to the other end, a liquid supply pipe communicating with the supply, a valve controlling said supply, a plunger in the casing between the supply and delivery free to reciprocate therein and having ends of differential areas the end of larger area beingexposed to the delivery pressure the smaller area being exposed to the pressure in the casing between the plunger and the supply, yielding means moving the plunger toward the delivery and a valve controlling the delivery.

6. An injector comprising a casing with means of supply at one end thereof and a 4delivery adjacent to the other end, a liquid supply pipe communicating with the supply means, a valve controlling said supply, a delivery passage connecting the delivery end of said casing with the supply, a check valve controlling said passage, a plunger in the casing between the means of supply and delivery free to reciprocate therein and having ends of differential areas the end of larger area being exposed to the delivery pressure the end of smaller areabeing exposed to the pressure in the casing between the plunger and the supply and a portion thereof being exposed to a less pressure than the delivery pressure when the plunger in the casing is moving toward the supply end of the casing and yielding means moving the plunger toward the delivery.

7. An automatic injector comprising a casing with a supply adjacent to one end and a delivery adjacent to the other end, a liquid supply pipe communicating with the supply, a check valve therein, a plunger in the casing between the supply and delivery free to reciprocate therein and having ends of differential areas the larger area being exposed to the delivery pressure through the delivery and the smaller area being exposed to the pressure in the casing between the plunger and the supply, yielding means moving the plunger toward the delivery and means of regulating the said yielding means.

8. An automatic injector comprising a casing with a supply adjacent to one end and a delivery adjacent to the other end, a

liquid supply pipe `communiceting with the supply, a check valve therein, a plunger in the casing between the supply and delivery free to reciprocate therein and having ends i ofidiierential areas the end of larger aree being exposed to the delivery pressure the end of smaller area being exposed to the pressure in the casing between the plunger and the supply, yielding means moving the plunger toward the del1very and means of 10 regulating the amplitude of movement of the said plunger.

EDWIN DORSEY LOANE, JUNIOR. Witnesses:

RAYMOND H. WHITING, l WILLIAM W. VARNEY. 

